3 Tumblr ll 7:28 PM @ 1 0 36% Done 3 of 3 *22 The position of a particle moving along the x axis depends on the time according to the equation x = ct² – bi², where x is in meters and t in seconds. What are the units of (a) constant c and (b) constant b? Let their numerical values be 3.0 and 2.0, respectively. (c) At what time does the particle reach its maximum positive x po- sition? From t = 0.0 s to t = 4.0 s, (d) what distance does the parti- cle move and (e) what is its displacement? Find its velocity at times (f) 1.0 s, (g) 2.0 s, (h) 3.0 s, and (i) 4.0 s. Find its acceleration at times (j) 1.0 s, (k) 2.0 s (1) 3.0 s, and (m) 4.0 s. !!
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Consider the equation of the position of the particle.
Since the x in the equation represent the distance along x-direction. Therefore, the unit of x will be “m” and the unit of time t is “s”. The terms on the right-hand sign of the equation are in subtraction. Thus, the unit of each term is independent of each other and it is equivalent to “m”.
(a)
Consider the first term and equate it to the unit of x that is to “m”, simultaneously substitute the unit of time for time.
Thus, the unit of the constant c is m/s2.
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